合金元素对铸态Cr12MoV冷作模具钢组织和力学性能的影响

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2022-02-01 DOI:10.1515/ijmr-2021-8509

K. Fang, Xuxu Guo, Feng Huang, Jianxin Zhou, Qingyan Xu, X. Qin

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引用次数: 0

摘要

摘要:通过正交试验研究了合金元素对铸态Cr12MoV冷作模具钢组织和力学性能的影响。结果表明:凝固组织主要由等轴晶组成，晶界处析出网状共晶碳化物;Mo对晶粒尺寸影响不大，而V和Ce能有效细化晶粒结构，且Ce的加入有利于破坏晶界共晶网络。随着V含量的增加和Ce含量的降低，合金的抗压屈服强度和显微硬度均有所提高。Mo的屈服强度和显微硬度分别在0.5 wt.%和0.9 wt.%时达到最大值。综合考虑晶粒尺寸数、显微硬度和屈服强度，给出了Mo、V和Ce的最佳含量。

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Effects of alloying elements on the microstructure and mechanical properties of as-cast Cr12MoV cold-working die steel

Abstract A group of orthogonal experiments were conducted to investigate the effects of alloying elements on the microstructure and mechanical properties of as-cast Cr12MoV cold-working die steel. The results indicate that the solidification structures are mainly composed of equiaxed grains with reticular eutectic carbides precipitated at grain boundaries. While Mo has little effect on grain size, the structures could be effectively refined by V and Ce, and Ce addition is beneficial for breaking up the grain boundary eutectic networks. The compressive yield strength and micro-hardness increase with increasing V content and decreasing Ce content. For Mo, the yield strength and micro-hardness reach their maximum values at 0.5 wt.% and 0.9 wt.% respectively. Overall, considering the grain size number, micro-hardness and yield strength, the optimal contents of Mo, V and Ce are given.

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来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.